So I purchased a GBTA last week. It was about the size of a womans fist. After the first 3 nights in my tank, it moved about 6 inches and grew about 12! I mean this thing was massive. I have 2 false percs which have been hosting a frogspawn, but immediately feel in love with the new arrival. The male seemed to have been almost biting the GBTA's mouth, but I'm not sure. Now about 4 days later, the nem is all shrivled up and it looks like it has been torn apart (black cotton like material is coming out) It is still alive, but I dont know what to do or what happened. Has anyone seen this that could give some advice. thanks.